Computing-machine.



Patented Feb. 1, 1910.

3 SHEETS-SEEBT 1.

1? W M W y "f ATTORNQ s A. Z. SEE.

COMPUTING MACHINE.

APPLICATION rum) MAR. 20, 1909.

Patented Feb. 1, 1910.

3 SHEETSSHEET 2.

l'mammroR Patented Feb. 1, 1910.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

AlfiEitT 2. SET], OF MARKESAN, WISGfiNSZN.

COMFUTiNG-MACEHIE fraction thereof, and which will give thetotal cost ofthe quantity weighed at any given price per ton, whereby when the weightof the load is given, it becomes neces- 'sary for the operator to simplymove a revolving pointer over a so called weight scale to the numeralswhich correspond with the weight of the load, whereby a so called costscale which is'connected with said pointer will be brought into View,from which the operator can at once see the value of the 'load at theagreed price and whereby the necessity of computation is avoided.

While my device may be made to indicate prices of other goods in greaterquantities and at other or difierent prices from those hereinafternamed, for brevity of description, the device shown is described asadapted to indicate the price of coal in lots ranging from ten pounds totwo tons and at prices ranging from '$3.00 to $11.00 per ton. It willbe'understood that the coal is first weighed onan ordinary scale,whereby the 5 weight of the load is'first obtained. Assuming, forexample, the load weighs one ton, the mechanism is so adjusted that thepointer is revolved once entirely around the annular weight scale andstopped. Assum ing that the load weighs two tons, two comleterevolutions are given to the pointer. 11 other words, the pointer ismoved one complete revolution over the weight scale for every toncomputed. If, however, the load weighs a ton and a halt, the pointer isgiven one ahd a half revolutions and stopped at 1000 on the scale,whereby the price scale which is connected with said pointer is movedforward a certain predetermined distance, by whichthe proper figuresindicating the value of the load at the price named is brought to View,as stated.

The construction of my machine is further explained by reference to theaccompanying drawings, in which- Figure 1 represents a plan view; Fig. 2is an end;view, part in section, and Fig. 3

Specification of Letters Patent.

Application filed March 20, 1909. Serial No. 484,648,

Patented Feb. 1, 1910.

is a vertical section, drawn on line of F ig. 1. v

Like parts are" identified by the same reference numerals'throughout theseveral views.

1 is the so-called weight scale, which indicates the weights of the loadfrom ten pounds to two tons.

2 is a pointer which is affixed to and supported from the rotatableshaft- 3 above the annular weight scale I. 7

4 is a movable flexible scroll upon which the cost scale is printed,which cost scale gives the prices of coal 'in lots, as stated,

from ten pounds, to two tons. The scroll 4: v

is supported at one end from the roller 5 and at its opposite end fromthe roller 6 and motion 13 communicated to the scroll from the pointer 2through the shaft 3, gear 7, pinion 8, shaft 9, worm gear 10, worm wheel11, shaft 12 and fabric supporting roller 5, whereby as said pointer isrevolvedover the weight scale, the scroll will be slowly drawn from oneof said rollers to the other, and whereby the several columns of'figures 13 printed on said scroll are caused to pass beneath thelongitudinal slot 1 1 whiclji5 is formed in the scroll inclosing case 16is a stationary column of figures, which figures indicate the priceper-ton of coal regardless of the quantity, from $3.00 to $11.00 perton. For example, assuming that the price of coal purchased is. $3.00per ton, as indicated at the left hand of the stationary column 16 inFig. 1. The pointer is moved over the scale 1 and stopped at the figurescorresponding with the weight of the load, when the quantityweighed at$8.00 per ton will, as indicated by the movable column 13, be $1.95, asshown on the movable scroll below the cost price. Again, if-theprice perton were $6.00, the cost of the load would be $3.90, as indicated in thecolumn 13 of the movable scroll below the cost price.

A spiral spring 16 is connected at one end with the roller supportingshaft 17 and at its opposite end with the case 15 by the however, theroller 5 is moved in the oppo-- site'direction, the roller 6 will berevolved in the opposite direction by the recoil of said spiral spring,whereby the scroll is retained while the roller supporting shaft 17 isin like manner revolubly supported in suitable journal bearings intheend walls of said case. The longitudinal slot 14 ,is preferablycovered with a glass 20, through which the.

figures of the scroll may be readily seen. My device as thus fardescribed is adapted to be manually operated by turning the pointer 2.

Preparatory to ascertaining the cost price of a load,.the pointer 2 isrevolved toward the leftuhtilthe scroll 1, upon which the cost scale'is.printed, and said pointer are both brought back to the starting or zeropoint. The gylalue of the load to be computed, is then ascertained bymoving the pointer 2 in the opposite direction or to the right adistance corresponding with the weight of the load. For example, asstated, if the weight of the load should weigh one ton and a half, thepointer is given a complete revolution and a half, when it is stopped atthe ligure 1000, when the movement of the pointer is communicated to thecost scale mechanism as hereinbefore described, and the cost price ofthe load will be brought to view as previously stated, be-

neath the price per ton of the stationary scale when the pointer 2 mayagain be turned back to the zero. point for the next succeeding load,when the process of computing the price may be again in like man nerrepeated.

lVhile my invention as thus far described is operative and practical,for convenience 0"". operation, I connect a spiral spring 21 at one endwith. the shaft 3 and at its opposite end at a fixed point with the wall22 of the inclosing case,'whereby as the pointer 2 is turned toward theleft, or back to the zero point, as previouslyidescribed; said spiralspring 21 will be wound up or put under tension, so that when thepointer 2 is released, it will be automatically moved forward over thescale by the recoil of said spring. As a convenient means of stoppingthe pointer 2 at the desired point, I have provided an additionalpointer 23, which pointer 23 is revolubly supported from the shaft 3above the rigidly aflixed pointer 2 and said pointer 23 is provided witha lever 24:, which is .pivotally supported therefrom upon the pin 25.

20.is a spring which is rigidly affixed at one end to the pointer 23 bya screw 27, or in any other convenient manner and bears -.t its upperend against the upper end of the lever 24:, whereby the opposite'end128of said lever is thrown downwardly so as to contact with and serve as astop for the pointer 2. Theobject of the lever 23 is to stop the pointer2 at the proper place on the weight scale to indicate the weight of theload.

29 is an annular ratchet which is secured to the face plate of the dial30 and 31 is a vertically moving pawl which is yieldingly retained inContact with the teeth of the ratchet 29 by the spiral spring 31, saidspring 31 being interposed between the collar 32 formed on the lower endofthe pawl and the upper wall of the inclosing chamher 33 of saidratchet, whereby said pawl is adapted to engage the teeth of saidratchet and thereby hold the pointer 23 at any desired point ofadjustment over the scale. Thus, for example, if it is desirable to stopthe pointer 2 at the figures 50 to indicate the fractional weight of aton at such point, the pawl 31 is caused to engage in the teeth of theratchet at such point. By way of explanation, we will assume that thespring 21 is first wound up and that the weight of the load is one tonand 500 pounds. The pointer 23 isadjusted by the pawl and ratchet deviceat the 500 pound mark on the weight scale. IVhen this is done, thepointer 2 is released by pressing downwardly upon the upper arm of the.lever 24, while the lower arm 28 of the lever is disengaged from thepointer 2 and said pointer 2 is permitted to make one completerevolution, which is the movement required for one ton, when it will bestopped in its secondrevolution by contact with the arm 28 of the lever,whereby the total cost of the load will be indicated, as preyiouslydescribed, on the movable scroll.

While I have shown and described a spring actuated pawl and ratchet forholding the pointer 23 at the desired point of adjustment, it is obviousthat a movable pin and a plurality of apertures, or any other equivalentmechanism, may be substituted for said pawl and ratchet for thus holdingthe pointer in place. -Vi hile, by the device thus described, the spring21 is adapted to be wound up by revolving the pointer 2, as described,with which it is connected, it is obvious that if desired, a separateand'independent mechanism may be connected with said spring for windingthe same independently of the movement of the pointer or the scrollcarrying rollers.

Having thus described my invention, what I claim as new, and desire tosecure by Let-- ters Patent, is-

1. In a computing machine of the class described, the combination of anannular weight scale, a revoluble shaft centrally sup oorted within saidwei ht scale. a winter ri I D for supporting said shaft from itsinclosing" case, a second shaft arran ed parallel to said first namedshaft, means For supporting said second shaft at 1ts respective endsfrom the walls of said inclosing case, a roller inount ed upon saidsecond shaft, a scroll supported at its respective ends upon saidrollers and adapted to be alternately wound from one of said rollers tothe other as said rollers are revolved, index numerals printed on saidscroll adapted to indicate the price or value of the goods computed, astationary price per ton scale located in close proximity to saidscroll, a s iral spring for revolving said second roller as the scrollon the first named roller is released, a longi tudinal aperture formedin said scroll inclosing case in close proximity to said scroll, saidscroll being adapted, as said pointer is moved over the annular weightscale to be wound from said first named roller to said secondnamedroller beneath said longitudinal aperture, the relative adjustmentof said cooperating parts being such that as the pointer is moved to theindex characters of the weight scale, the characters on said scrollwhich indicate the value of the load will be i brought to View beneathsaid longitudinal aperture, whereby the cost of any given quantity ofgoods per ton will be indicated by the nun'ierals which are brought toView beneath said longitudinal .aperture,-substant-ially as and for thepurpose specified.

2. In a computing machine of the class described,the-combination of anannular weight scale, a -'r voluble, rigidly afiixed pointer adapted to"be moved over said scale, a stationary price per ton scale, a movablecost scale, means for communicating motion from said pointer to saidmovableficost scale, a second pointer revoliubly supported upon saidshaft above sai first named pointer, an annular ratchet supported fromthe base of said annular weight scale, a pawl connected with said secondpointer and adapted to engage the teeth of said ratchet and retain saidpointer at any desired point of adjustment, a spiral spring connected atone end to said shaft and at its opposite end at a fixed point with itsinclosing case, a spring actuated lever pivotally connected with saidsecond named pointer and adapted to serve as a stop for said first namedpointer as the latter is revolved by the recoil of said spiral spring,said first named pointer being adapted to be manually moved and adjustedat a point on said weight scale corresponding with the weight of theload, whilesaid first named lever is adapted to be moved by the recoilof said spiral spring with said second lever and to pass beneath it whenreleased from contact with said stop, all substantially as and for thepurpose specified.

In testimony whereof I affix my signature in the presence of twowitnesses.

ALBERT Z. SEE.

\Vitnsses IRA W. PARKER, RALPH CLARK.

